code: def test_spec_path_open(self):
      self.assertEqual(self.files.read_bytes(), b"Hello, world!")
      self.assertEqual(
          self.files.read_text(encoding="utf-8"), "Hello, world!"
      )
  
imports: import io
  import unittest
  from importlib import resources
  from importlib.resources._adapters import CompatibilityFiles, wrap_spec
  from .None import util
label_desc: Use image node_id 12 for calling the CompatibilityFilesTests obj's underlying member method code with example usage: obj.test_spec_path_open() without return types